paired: Stellar Binarity Probabilities for Kepler and TESS Planet Hosts

paired is a statistical framework developed by Quadry Chance at the University of Florida for determining stellar binarity using Gaia radial velocity data. It estimates the probability of unresolved stellar companions for a large subset of stars surveyed by NASA's Kepler and TESS missions, based on excess radial velocity noise in Gaia Early Data Release 3. The framework is designed to explore the effect of binary companions on planet formation and to help identify false-positive transit candidates.

Use Cases

• Identifying false-positive exoplanet transit candidates based on inferred stellar companions.
• Studying the correlation between stellar binarity and planet formation disruption based on companion probability estimates.
• Benchmarking inferred radial velocity semi-amplitudes against ground-based radial velocity surveys.
• Exploring the demographic effect of binary companions on planetary systems at a population level.

Strengths

• Leverages radial velocity measurements for over 6.5 million targets from Gaia Early Data Release 3.
• Benchmarks inferred radial velocity semi-amplitudes against ground-based surveys where possible.
• Sensitivity is described as typically out to several AU and mass ratios >0.1, dependent on stellar magnitude.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

University of Florida

Collection Method

Statistical analysis of Gaia EDR3 radial velocity measurements compared to typical noise for stars of similar spectral type and magnitude.